ARE BROILER CHICKS VACCINATED FOR COCCIDIOSIS MORE SUSCEPTIBLE TO COLONIZATION OF SALMONELLA ENTERITIDIS?
A. No. A recent study in Brazil by Instituto de Biocincias UNESP with 120 broiler chicks showed that vaccination with Coccivac-B has no bearing on the colonization or longevity of Salmonella enteritidis (Se) in the gut. The birds were divided into six groups: Group 1 received the probiotic ACM (anaerobic cecal microflora) by spraying after vaccination against coccidiosis and challenge with Se; Group 2 received ACM by intra-esophageal inoculation after vaccination against coccidiosis and challenge with Se; Group 3 received ACM in drinking water after vaccination against coccidiosis and challenge with Se; Group 4 was not treated with ACM but vaccinated against coccidiosis and challenged with Se; Group 5 was not treated with ACM or vaccinated, but challenged with Se; and Group 6 was not treated or vaccinated and not challenged (negative control). The colonization of the digestive tract, the presence of Se in feces, and body weight were determined 2, 7 and 12 days after challenge. Se count
